Device for recoil control



55h 279 R. H. s. HUQHES DEVICE FOR RECOIL CONTROL Filed April 25. 1938 2 Sheets-Sheet l Feb, 2?, H14@ R. H. s. HUGHES ZJQZM DEVICE FOR RECOIL CONTROL Filed April 25, 1938 2 Sheets-Sheet 2 Patented Feb., 2 7, 1940 FEE 2,192,01 DEWCE EUR RECON. CGN'EEL Robert H. S. Hughes, Baltimore, lim.,k assigner oi? one-to Milton Roberts, Baltimore, Md.

Application April 25, i938, SerialNo. m3413175 4 Cla.

This ir .tion relates to recoil control mechanism for l,uns and particularly to means assoelated with said mechanism for reducing the blast, ash and smoke which usually result from the discharge of iirearms.

In the accompanying drawings Figure 1 is a central longitudinal section through one of my control devices, showing the same attached tothe forward end of a gun baria rel, the latter being also shown in longitudinal central section. Y

Figure 2 is a front end view of the device shown .in Figure 1. I

Figure 3 is a section on the line 3-23 of Figl ure 1; i

' Figure i is a longitudinal section through a modiied form of device, showing the same attached to the frontend of a gun barrel;

Figure 5 is a similar view of another modifica- 20 tion, the section being taken on the line 5 5 of Figure 6;

Figure 6 is a front end view of the device shown in Figure 5;

Figure 7 is a section on the line i-l of Fig- 25 ure 5;

Figure 8 is ,a longitudinal central section through a long form of condenser shield, the recoil device being shown in outline.

Referring to Figures l to 3 inclusive of the 30 drawings, l indicates a. gun barrel having the usual grooves 3 and lands if Upon the muzzle end 2 of the barrel is shown an adapter 5 having an outwardly extending ange 6 at its end and having an inwardly extending shoulder 6B, which 35 rests against the end of the gun barrel. A sleeve i extends forwardly from the shoulder, this sleeve being concentric with the gun barrel and the interior of the sleeve having substantially the same internal diameter as the bore of the 4o gun. A metal body t is threaded on to the adapter and is held against rotation by a set screw 9. The body S has a cylindrical combustion chamber iii into which the sleeve 'i' projects, and at its forward end the body has a seal i5 port i5 in line with the bore of the sleeve and with the bore ci the gun barrel when the device is mounted on a gun. An annular shoulder l2 extends from the inner end of the seal port to the' side wall oi the chamber and a plurality ci el) discharge ports il extend rearwardly and outwardly :from the forward part of the chamber adjacent said internal shoulder through an external shoulder it. Baule ports il, inthe form oi arcuate slots, extend 'through the side wall of 55 the bei' at the rear of the discharge ports (C11. dil- 14) il, so that gases issuing through the baille ports will intercept the gases passing from the discharge ports.

A metal shield c is mounted on the recoil device and surrounds it and this shield forms a 5 condenser for the products of combustion issuing from the ports of the recoil device. As shown, this shield comprises a cylindrical part 25 proiecting in advance of the seal port I5 and threaded on to the part lli through which the seal port extends, as shown at d'3. From the part A25 the shield ares outwardly and rearwardly as shown at it to a rearwardly extending cylindrical portion i9 which terminates in a bell mouth 20. The body t of the recoil device has a sloping 15 surface 22 against which a sloping surface 2l on the inner side of the shield bears, so that when the shield is threaded on to the recoil device it will be held rmly in place. The part I9 of the shield surrounds the recoil ports and baille ports and is spaced from them and the part 25 is concentric with the seal port and is spaced from it and extends in advance of it.

In the operation of the device shown in Figures 1 to 3, when the gun is red the bullet passes through the sleeve l, the chamber H3, seal port l and condenser 26. The products issuing from the gun barrel and entering the chamber I0, following the bullet, are in all stages of combustion, some still passing from the solid state through a plastic or liquid state to the gaseous state, and when the bullet is in the seal port an extremely y high pressure develops in the 'chamber'. The gases and still burning products of combustion are ejected through the discharge ports Il and baille ports Il against the part i5 of the condenser. Without Vthe condenser the discharge of these products through the ports il against the atmosphere, by reaction against the shoulder I3, would largely eliminate recoil, and the discharge through the baille ports, by intercepting the discharge through the ports Il, would largely eliminate blast against the operator of the ilrearm. When the condenser c is applied t0 the device, as shown in Figure 1, the amount of re' coil elimination will be reduced somewhat but so will the blast, flash and smoke be largely eliminated because the still burning products of combustion, partly in liquid or plastic state, will be driven against the condenser wall and condensed thereon. In the same way, the still burning products of combustion issuing from the seal port as the bullet leaves said port. will expand outwardly against the forward condenser 25 and the arms 35, 36 and 31 of which are welded or otherwise secured within the forward end of the tapering part H of the condenser.

. can be applied to a recoil device as in Figure 5,

and any products in the fluid or plastic stateV will be condemed, thus reducing the smoke, blast and ash.

In Figure 5 the condenser c' has the cylindrical rear portion 49 and tapering forward portion 4i, like the parts i9 and it `in Figure l, but it extends forwardly only as far as the end of the seal port. The body d of the recoil device has a tubular extension 53 which forms the seal port i5, and the condenser c has suitably secured within its forward end a spider 7l,

'Ihe spider has a central opening adapted to receive the tubular part I5 and the spider is threaded onto Said part as indicated at 42. The inner wall of the condenser rests against ribs 43, 43 and 43h on the body (Figure 7) which hold the condenser in position concentric with the axis of the chamber and seal port. In this form of device, the spaces surrounded by the front and rear portions of the condenser are in communication with one another and with the atmosphere. The operation is substantially the same'as that described in. connection with Figure 1.`

In Figure 8 I have shown a modification in which the condenser element c2 has a cylindrical rear portion 4B and tapering portion 4|, the same as in Figure 5, but there is also` a long forward extension 50. This condenser element said device being indicated in dotted lines in Figure 8. In this case products of combustion issuing from the various ports will contact the condenser` element throughout its length and any still burning plastic particles `will condense thereon, thus reducing the smoke, blast and flash.

I claim: 1

1. A recoil controlling device .comprising a metal -body having a combustion chamber therein, said body having at the forward end of the chamber a seal port and a reaction shoulder surrounding the inner end of said port and extending to the side wall of the chamber andv having discharge ports extending outwardly and rearwardly from said shoulder and baffle ports ln its side wall at the rear of the discharge ports. and also having means at its rear end for connecting the device to a gun barrel with the bore of the barra m aunement with theseal port. and a condenser. comprising a metal shield secured to the forward part of the body and extending rearwardly and open at its 'rear end,

said shield surrounding the discharge ports and baille ports and spaced therefrom.

2. A recoil controlling device comprising a metal body having a combustion chamber therein, said body having at its forward end a seal port and a reaction shoulder surrounding the inner end of said port,4 and having discharge ports extending outwardly and rearwardly from said shoulder and baiiie ports in its side wall at the rear of the\discharge ports, and also having means at its rear -end for connecting the device 'to a gun barrel with the bore of the barrel in alinement with the seal port, and a condenser comprising a metal shield secured to the forward part of the body and having,a part extending rearwardly and open at its rear end, said part surrounding the discharge ports and baille ports, and a. part projecting forwardly beyond the seal port and having its forward end open.

3. A `recoil controlling device comprising a metal body having a combustion chamber therein, said body having at its forward end a seal Port and a reaction shoulder surrounding the inner end of said port, and having 'discharge ports extending outwardly andrearwardly from said shoulder'and baille ports in its side wall at the rear of the discharge ports, and also having means at its rear end for connecting the device to a gun barrel with the bore of th barrel in alinement with the seal port, and a condenser comprising a' metal shield secured to the for- Ward part of the body Aand having a part extending rearwardly and open at its rear end, said part surrounding the discharge ports and baille ports, and a part projecting forwardlybeyond the seal port and having its forward end open, the interiors of. said parts communicating with one another.

4. A recoil controlling device comprising a metal body having a combustion chamber therein, said bodyhaving at its forward end a seal port and a reaction shoulder surrounding the inner end of said port, and having discharge ports extending outwardly and rearwardly from 'said shoulder and baille ports in its side wall at the rear of the discharge ports, and also hav- ,ing means at its rear end for connecting the device to a gun barrel with the bore of the barrel in alinement with the seal port, and a condenser comprising a metal shield secured to the forward part of the body and extending rearwardly and open at its rear end, said shield surrounding the discharge ports and baille ports and spaced therefrom, and having a part extending forwardly as far as the forward end ofthe seal port.

ROBERT H. S.` HUGHES. 

